Machine for forming plastic articles by dipping.



1. L. MAHONEY.

MACHINE FOR FORMING PLASTIC ARTICLES BY DlPPlNG.

APPLICATION HLED FEB 26.1915.

Patented Nov. 16, 1915.

L SHEETS-SHEET I.

INVENTOR ATTORNEY WITNESSES:

J. L. MAHONEY.

MACHINE FOR FORMING PLASTIC ARTICLES BY DIPPING, APPLICATION FILED FEB- 26. 1915.

1.,1Q923. I Patented Nov. 16, 1915.

7 SHEETSSHEET 2- 4 i 9 95 16! F; 94 T I 4 94 g 94 H3 r i 94 if I I I06. I l 25 I WITNESSES. M/VEIVTOH J. L. MAHONEY. MACHINE FOR FORPMNG PLASTIC ARTICLES BY DIPPING.

APPUCATION FILED FEB. 26. I915.

Patented Nov, 16, 1915.

7 SHEETSSHEET 3.

ATTONE) J. L. MAHONEY. MACHINE FOR FORMING PLASTIC ARTICLES BY DIPPJNG.

APPLICATION FILED FEB- 26. I915- Patented Nov. 16, 1915.

ATT I? H Patented Nov.

7 SHEETS-SHEET 5.

. 1. L. MAHONEY. MACHINE FOR FORMING PLASTIC ARHCLES BY DIPPING.

APPLICATION FHTED FEB 26.1915. 'Lififlfi r L. MAHONEY. MACHINE FOR FORMING PLASTIC ARTIJLES BY DIPPING.

APPLICAHON FILED FEB. 26. 1915.

1., 1 6,923. Patented Nov. 16, 1915.

7 SHEETSSHEET 6- W INVENTOI? ATTORNEY J. L MAHONEY. MACHINE FOR FORMING msnc ARTICLES av DIPPING. APPLICATION FILED FEB- 26. I915.

1 1 U,%& Patented Nov. 16, 1915.

7 SHEETS-SHEET 7- WITNESSES: Ill/MENTOR JEREMIAH L. MAI-IONEY,

Lean

OF NEW HAVEN,

CONNECTICUT.

MACHINE FOR FORMING PLASTIC ARTICLES BY DIPPING.

Specification of Letters Patent.

Patented Notnlti, 1915.

Application filed Fe hruary 26. 1915. Serial No. 10,728.

To allco/tom it ntltj/ omm V1 lie it known that .l. I.

:nnnmu L. Manoxnr. a citizen of the i nited States, residing at New llaven, county of New Haven. State of Connecticut, hate invented an Improvement in Machines for Forming Plastic Articles by Dipping, of which the following is a specification.

This invention relates to apparatus for forming articles of plastic material more particularly for making hollow rubber articles, such, for exan'iple, as nursing bottle nipples, medicine dropper bulbs and the like, by what is known the dipping process.

The invention has for its general object to ,provide an automatic machine whereby such articles may be rapidly and inexpensively produced in large quantities and of a high and uniform quality with a minimum amount of manual. labor or skilled attention.

\Vith the foregoing and other objects in view I have devised the novel machine which 1.will now describe. reference being had to the accompanying drawings in which:

Figure 1 is an end elevation of the machine. partly broken away to show the cam shaft in section. Fig. 2 is a side or front elevation, as viewed from the right in Fig. 1, showing one of the dipping tanks in section. Fig. 3 is a section sul'istantially on the line 3, Fig. Fig. -t is a detail sectional view of one of the dipping frames taken siibstantially on line i t. Fig. 2; Fig. 5 is a sectional view on an enlarged scale taken substantially on the line Fig, 2. h is an elevation, partly broken away of the parts shown in Fig. 5 as viewed from the left in the latter figure. Fig. 7 is adetail view of one of the tension or friction devices applied to the .lipping frame shafts as viewed from the line 7-7, Fig. 6. Fig. 8 is a detail section, taken substantially on .the line 8 8. Fig. 1. showing the mechanism for locking and positioning the rotating carrying head at each operation. Fig. 9 is a section on the line 99,'F-ig. S. Fig. 1,0 is an enlarged detail elevation of certain parts shown, at the bottom in Fig. l and il .lustratin the mechanism for o )erating the parts shown in Fig. 9. Fig. 11 .is a detail elevation of certain of the parts shown in l i g. 10 as viewed from figure. Fig. 12 is a detail sectional view: taken substantially on the line 12-12, Fig.

Fig. 6 i

the left in the latter 2, andshowing the mechanism for operating one of the dipping tanks. Fig. 13 1s a.

detail section taken substantially on the line I i i-13. Fig. 12. Fig. Li a detail elevation of the mechanism adjacent theleft end upright shown in Fig. 2 for operating or rotating the dipping frames after the dipping operation. Fig. I5 is plan View of the parts shown in Fig. .14 andothers adjacent thereto. l ig. 16 is a detail elevation of one of the cams shown in Fig. 15 and parts cooperating therewith. Fig. 17 is a fragmentary elevation of certain parts shown in Fig. let as vicw' ed from theright in the latter figure. Fig. 18 is a detail elevation of certain parts shown in Fig. ll, showing these parts in a diiferent position. Fig. 19 is a side elevation, partly in section, illustrating certain clutch mechanism hereinafter referred to. Fig. 20 is a section on the line 2020. Fig. 19. l ig ill is a detail view ofa dipping form suitable for use in the machine for the purpose of forming nursing bottle nipples and showing a partly completed nipple in placethereon. Fig. 22 is a view similar to Fig. 21 showing a form suitable for making medicine dropper bulbs. Fig. 23 is a fragmentary view of one 0 the dipping boards, showing a form of clip suitable for' use in connection with the dip ping form shown in Fig. 21.

The machine forming the subject of the present invention operates to produce hollow rubber or other plastic articles of the general character above referrcd to by what is known as the dipping process. which consists. in dipping suitably shaped forms into aliquid rubber or other solution, composition or cement, thereby forming. a coatingon deposit of said solution or cement upon'the forn'i, which coating or deposit 'subsequently dries to-constitute the desired forms 30 suitable for the manufacture, as a above described, of nursing bottle nipples, said form having thereon a deposit 31 produced by one or more dippings and which deposit constitutes a partly completed nipple.

in Fig. 22 is shown another form 32 suitable for the n'ianufacture of medicine dropper bulbs and having thereon a deposit representing a partially completed bulb.

For convenience the machine is. herein shown and described In connection with the operation of forming nursing bottle nipples,

but it will be understood that with slight modification, particularly in the shape or character (if the clipping forms used, the machine would operate equally well to formfin er cots balloons bathing ca )8. loves or any other article capable of manufacture by the clipping process.

Referring to l igs. 1 and 2, the frame of the machine. as shown comorises a )air of r J 1 end uprights net and do secured to a suitaole base, floor or foundation, whiclrlatteris preferably formed with suitable recesses or pits for the reception of such parts of the machine as project below the upper level thereof 36 denotes the dri v ing or power shaft suitably journaled at the top of the upright 34 and receivii'ig power from any suitable source. 37 denotes a pulley fast upon the shaft- 36 and connected by abelt 38 with apulley 39 fast on a countershaft ll) suitably journaled in brackets 41 secured to the upright 42 denotes a worm on the shaft 4C0 which meshes with a wormv gear on a cam shaft 44. journaled in the-uprights 3i and adjacent the lower ends of the latter,

and, if necessary, at one or more intermediate points in bearings fixed to the machine base as indicated, for exan'iple, at 45 in. big. 2. #6 denotes the shaft of the intermittently rotating carrying hearhwhich shaft is jour naled in the uprights 34. and adjacent the upper ends of the latter. which are pinned or otherwise rigidly secured to the shaft 4-6. 'lhe disks 47 may be of any suitable number in accordance with and dividing rotating head into two sections to accon'imodatc the two sets of dippingframes. 48 denotes radiating arms bolted or otherwise rigidly secured to the disks 4-. said arms forpurposes of lightness and rigidity being): preferably channel or U-shaped in cross section, as shown in Figs. 1 and 8. The arms 4-8 may be of any suitable number, but preferably, and as herein 4/? denotes disks shown, nine correspondingly arranged arms are carried by each of the disks 47, thus proyidin'g for nine dipping frames in each set and for nine successive positions in each complete rotation of the head, as hereinafter explained. 4-9 denotes the dipping frame shafts which are rotatably mountedin suitable journals carried by the outer ends of the arms 48. 50 denotes an operating .or ratchet disk fixed to the shaft 46 outside the upright and provided with a series of notches preferably equal in number to the arms 4-8 and herein shown as nine. 51 denotes an oscillating pawl arm or carrier loosely mounted on the shaft l5 adjacent the disk 50 and carrying at its end a preferably spring pressed pawl 52co6perating with said ratchet disk 50. The pawl arm 51 is connected by means of a link or connecting rod 53 with a lever 51L pivoted on a stud 55 carried.

by a suitable fixed bracket 9:2 at the base of the machine. The end of tire lever is preferably slotted to receive an adjustable clamp bolt 56 to which the end of thelink or connecting rodis pivoted By adjusting the pilot 56 with reference to the slotted end of the lever 5i the stroke of the pawl arm 51 may be varied for the purpose of securing proper operation. 5? denotes an arm keyed or otherwise fixed upon the cam shaft ll and carrying at its end a pin or stud 93 upon which is journaled a roller 58 adapted to engage the lever (see also Fig. 10). At each complete rotation of-the shaft H engagement of the roller 58 with the lever 54 causes the pawl arm 51 to be oscillatcdor swung on the shaft 4-6 and the ratchet disk 5.0,tdgcther with the rotating carrying head, to be rotated 01' angularly moved one step, or, in the present embodiment of the invention, one-ninth of a completerotation.

To prevent shocks and overrunning of the carrying head due to the momentum caused by'thcrelatively great weight of said-head and the relatively sudden impulse in starting caused by the engagement of the roller 58 with the lever 54, the following mechanism is provided, reference being had to Figs. 1,2, 19 and 20: denotes a disk or flat cylindrical inner clutch member bolted or otherwise secured to the outer face of the operating disk 50 and provided at its outer end with a peripheral series of ratchet teeth (ll). ($1 denotes an outer clutch member or pawl carrier rotatably mounted on the inner cylindrical portion of the clutch member or ratchet wheel 59 and provided with a series of spring pressed paw'ls 62. The pawls (32 are preferably 50 positioned on the member (1: thatonly one pawl at a time is in complete operative engagement with a tooth (30 on the disk 59, the spacing of said pawls being disproportionate to or not .eXactly'commensurate with the spacing of said teeth,

so that by providing a suitable number of pawls 02 one of said pawls may be at'substantially all times in complete operative engagement with said disk Without theneces- 5 sity of cutting the teeth 60 undersirably small. denotes a sprocket wheel bolted or oti'ierivisc fined to the pawl carrier 61 and connected by a sprocket chain (a with a sprocket wheel 65 keyed or otherwise fixed on the earn shaft ssl, said sprocket chain. preferably passing over an idler (36 rotatably mounted on a stud 67 projecting fron'i the outer face of the upright for the purpose of preventing undue slack in said sprocket chain. The arrangement and proportions ofthe partsare such that the pawl carrier 6]. is rotated. from the shaft ll through thesprockets65 and G3 and chain 64 at an angular velocity substantially equal to the maximum] angular velocity imparted to the disk 56 from the shaft 44- through the lever 5%, connecting rod 53 and pawl 52,. and in the same direction, this direction in the construction shown being clockwise as viewed in Fig. l and as indicated by the arrow on Fig. 2-0. When the carrying head is at rest oris moving at a speed less than its predetermined maximum'the pawls 62 are moved idly over the ratchet teeth (30; Should, however, the carrying head, by reason of momentum or otherwise, start to move ata speed. greater than this predetermined maximum, tending to turn the disk 59 in a clockwise direction relative to the pawl carrier 61, this movement will be prevented by engagement of a pawl (321with the teeth (30, and the incipient increase of speed immediatelychecked. In other words, the mechanism last described permits the carrying head to remain at rest or to rotate as fast as "or slower than a predetermined velocity but prevents any excess of speed.

For the purpose of preventing overthrow of the carrying head beyond the positions into which itis positively turned by the disk i and pawl 52, and for the purpose of p0si-' tionin'g said head after each forward movement, the'following mechanism is provided, reference being had to Figs. 3. 2 and 8 to 11: 50 68 and 69 denote spaced sleeves passing through suitably disposed openings in the upright and held in place therein by means of shoulders "70, formed on said sleeves and engaging the outer face of said upright, and nuts 71 on the threaded. inner ends of said sleeves and engaging the inner fat-e of said upright. 72 denotes a rod or plunger slidably mounted in thesleev-e (38,

The rods or plungers 772 and 73 are normally pressed inwardly (rl' llOWEEl'Q'l the right; in.

gated lateral extension of said head.

and 73 a similar plunger in the sleeve ($92 interior shoulders in the sleeves 68and 69,

i said inward movement being limited by nuts 76 and 77 on the outer ends of said rods or plungers and adapted to engage the outer ends 01 said sleeves. The rods 72 and 73 are held against rotation or angular movement in the sleeves 68 and 69 by means of pins 78 and 79 projecting from said rods. respectively andoperatiug in slots 80 and .81 in the sleeves U8 and (35). 82 and denote heads on the inner ends of the rods or plungers 72 and 73 respectively, the adjacent sides of said heads being separated by a space substantially equal to the width of the arms -18. The head 82 is preferably substai'itially square, while the head 83 is bevelcd at its outer side, as indicated at 84 the bevel being preferably formed on an elon: As the carrying head is rotated in a clockwise direction, as viewed in Fig. l, the arms 48, when adjacent their lowermost position, move in the direction of the arrow on Fig. 8. 'As each arm -18 is brougl'it into engage mentwith the beveled surface 8% on the head 83, said head is moved outwardly, or toward the left in Fig. 8, against the tension of the spring 75, into the position shown in dotted lines in Fig. 8, thereby permitting said arm to pass said head. As soon as the arm 84- has passed the head 83 it is brought into engagement with head and positively stopped thereby, the parts being so proportioned and arranged that this takes place upon the completion of the positive move ment of the disk 50 by the pawl so that overthrow of the carrying head byreason of momentum is prevented. Immediately after an. arm 48 has passed the head 83 said head is moved inwardly by the spring 75 into a positii'm innnediatelv in the rear of said arm 48. as shown in full lines in Fig. 8, thereby preventing rebound or reverse mo vement of the carrying head.

In order to permit further forward moveinent of the arm d8 thus positioned between the heads 62 and 83, that is to say further rotation of the carryin sihead in a clockwise direction as viewed. in Fig. 1, it is necessary that the head be momentarily withdrawn,

and tor this purpose the following 1necliacrank hirer is connected by means oi-a link or com'iecting red as to one arm of a lever ll pivoted at 190 to a braricltet 91 suitably secured in stationary taxation as I by being bolted to the bracket 95. The free end of the lever 85- extends into the path, move ment oi the stud. 93 upon which the roller 5% tin) is journaled, said stud being for this purwithdraw the head 82 from the path of movement of the arms 48. Thereafter the roller 58 is brought into engagement with the lever 54 and'moves the same to cause a fractional rotation of the carrying head, as above explained. After the movement of the carrying head has started, and after the arm 48 previously in engagement with the head 82 has been moved beyond said head, the stud 93 passes out of engagement with. the end of the lever 89, permitting the spring 74 to move the head 82 inwardly into a position to be engaged by the'next arm 48 upon the completion of the movement of the carrying head. are journaled in the outer ends of the arms 48, are mounted the dipping or carrying frames which in turn carry the dipping forms above referred to. As herein shown each of the shafts 49 carries two complete dipping frames. although, asabove stated, the precise number maybe in accordance with preference or requirement. Each complete dipping frame comprises a pair of end members or heads 94 (see Figs. 1, 2 and 4) keyed or otherwise fixed upon the corre-' sponding shaft 49. Each end member or head is preferably rectangular in form, and

the two heads of each pair are correspondingly angularly positioned upon the shaft 49-. Upon their inner faces ad acent their edges the heads 94 are provided with grooves said holding means comprises a set of spring.

arms 98 adapted particularly to engage the end of a nipple form 30 such as shown'in Fig. 21. It will of course be understood that theform holding means on the dipping boards or carriers 96 will be of a construc tion and arrangement depending upon the particular character of dipping forms in.

use. :It will also be understood that the dipping forms are secured to the dipping boards 96 in positions perpendicular thereto with their form ng Upon the shafts 49, which Referring to Fig. 2, 99 denotes dipping tanks equal in number to the clipping frames on each shaft and herein shown as two. Wheres. pluralitypf dipping tanks 99 are employed, as in ,the present instance, said tanks may, if desired, contain solutions or compositions of different characters, as for example different colors. The tanks 99 are located inunediately beneath the clipping frames, when the latter are in their lowermost position, and are raised to cause the dipping forms on the dipping boards carried by the lowermost sides of said dipping frames to be immersed in the liquid in said tanks, said tanks beingthereafter lowered to permit the turning of the carrying head as above explained. 100 d'enotes gutters surrounding the upper edges of the tank'99. The tanks 99 are kept filled with solution or liquid composition, preferably continuously, from any suitable source (not shown), the

surplus solution overflowing into .the gutters .100 and being drained therefrom by any suitable means (not shown). In this man- ;ner the level of the liquid in the-tanks 99 upper edges of said tanks, so that, as said tanks are always raised to the same prede termined point, the dipping forms 30 will always be immersed in the solution to a constant predetermined depth. For periodically raising and lowering the tanks 99 be tween the periods of movement of the intermittently rotating carrying head the following mechanism is provided, reference being had to Figs. 12 and 13. As this mechanism the same for each tank it will be described with reference to one only. 101 denotes a slide upon the upper end of which the tank 99 is mounted, said slide having a vertical slot 102 through which the cam shaft 44 passes, and being guided for vertical movement in ways 103 suitably fixed in position, as by being carried by brackets 104 (see F lg.- 2} secured to the base of the machine. 105 denotes a cam roller carried by the slide 101 and cooperating with an edge cam 106 secured to the cam shaft 44. The direction of rotation of the cam 106 is as indicated by the arrow'on Fig. 12, and the form of said cam is preferably such as to produce, first,

a relatively quick upward movement of the.

tank 99 to its maximum height, thereby immersing the dipping forms 30 to the predetermined point, then a slow and more or less gradual downward movement of said tank until the dipping forms areclear of the liquid, and thereafter a quick downward movement of said tank followed by a final period of rest with said tank'in its lowermost position'. In orderto' enable the point of maximum elevation of the tank 99, and consequently the depth of immersion of the dip-v ping forms, to be'adiusted, the cam roller 105 is preferably carried by an eccentric 107 g 109 and 110 and which may be tightened to secure the arm 108 to the arm 111, thereby holding the cam roller 105 in adjusted position. In order that all vof the dipping forms 3 on eaclrdippine' board 96 may be immersed to the same depth in the liquid in the corresponding tank 99, it is necessary that said boards. prior to the dipping operation, be-broue'ht into an exactly level or horizontal position. and to insure this condition the following mechanism isprovided,

reference being had particularly to Figs. 2,

3, 5 and G. 113 denotes star wheels keyed or otherwise fixed to'the dipping frame shafts r!) at .the ends thereof adjacent the upright 34. Each of said star wheels is provided with a number of arms'euual to the number of dipping boards carried by each of the dipping frames herein shown as four. each of said arms being formed with a tapered or pointed end. 114 denotes a rock shaft jour naled in a bracket 11?) bolted or otherwise secured to the upright 23%. 111i denotes a pair of arms fast upon the shaft 111 and carr ing at their ends adjustable contact members in the. form of adjusting screws 11'? provided with heads 11% adapted, when the shaft 114 is rocked in the direction to raise the outer ends of the arms 1113, to engage opposite arms of the star wheel 11% then inlowermost position. liy properlv adjusting the stop screws it will be seen that engagement of said stop screws with the arms of the star wheel 11 ma be made to cause the correspondin shaft 4!) to occupy an angular position in which the lowermost dipping hoards of the corresponding dipping frames will be exactly horizontal. ll!) denotes a third arm fast upon the shaft 11-t and con- I nected at its curhlrhuincans of a link or connecting rod 1520 with the end of an arm 121 fast upon a rock shaft 122 iournaled in a stationary lu'ackot 12 3 at the base of the machine. 12-1 denotes {a second arm fast upon the shaft 112 andcaFrvinL at its end 'a cam roller 125 cooperating with a path cam 12G fast upon the cam shaft +4. The form of the path cam 126 is such as to cause the shafts 12,2 and [H to be rocked to raise the arms 11? and/level the dipping boards. as

above explained. just prior to the dippinu operation, to hold said boards in level position during said operation. and to withdraw the stop screws 117, from engagement with the star whccl 11 3 at the. completion of said operation. After the. dipping of the forms in the solution or composition in the tanks 99 it is necessary that the positions of these forms be repeatedly changed in order to prevent the solution from draining off and to cause the same to dry or set in the form of an even coating or layer. For this purpose. as also for the purpose of turnine; the dipping frames into a position to bring different dipping boards into operative position at the completion of successive cycles or rotations of the carrying head. and for otherwise controlling: the dipping frame shafts 49. the followin mechanism is providedfl Rcferring to Figs. 1, 2 and 3, and particularly to the last named figure, 127 denotes a stationary disk concentric with the shaft 46 and bolted or otherwise secured to the inner face of the upright 34. 128 de- 'notes radiating armsbolted or otherwise rigidly secured to the dish 1527. said arms 5 iWHlQ' of any suitable number and supportugz at their ends a ring or annular frame member 129 whose outer peripluirvlies just within the path of; movement of the axes of theshafts i9. 130 denotes fixed studs preferably provided with rollers projecting from the ring 129 and adapted to be successively engaged by the arms of the star wheels 1133 as the carrying head is rotated.

In Fig. 3 the successive positions of each shaft 49, as the carrying head is intermittently rotated, are indicated by the Roman numerals I to IX. position I being the dipping position. A stud 130 is provided on the ring 12!) adjacent each position from I11 .100.

to 1X inclusive. The arrangement of studs 130 is such that between the positions 111 and 1X each shaft 4-9, is it is moved from one position to the next, will be/rotated through an angleof 180 with reference to a stationary or absolute base, therebv com- 7 letelv reversin the di 0 )in frames carried thereby. lhisrotary movement is a compoundone made up in part of the movement of revolution of the shafts t about the axis of the shaft 4-13 and in part by the rotation the shafts- 49 on their own axes. In order to produce the desired result of completely reversing the dipping frames -be.- tween each two positions. in addition to a roller 130 at a point corresponding to each position from 111 to 1X. intermediate rollers 1550 are provided between positions 1V and V Y and VT. and Vii and V111. 131 denotes a stud or 'roller similar to the studs 1 .and correswinding to position 11. In order to permit a shaft if jwhen in position ll. to be indcpeiulcntly rotated while the carrying head remains stationary. means are provided whereby the stud 131 may be in'oved out of position to be engaged by the star wheel 11 when in position'H, said means comprising a lever l32iby which the stud 1 31. is carried, said leverlbcing pivmovement of the arms of the corresponding.

star wheel 113, thereby permitting the corresponding shaft- 49 to be rotated ,by means which will presently be described.

Referring now to Figs. 1, 2 and 14 to 18 inclusive, 135 denotes gears or 'pinions fast upon the dipping frame shafts 49 at the ends thereof opposite the star wheels 113, that is to say at the ends adjacent the upright 136 denotes arack guided for horizontal movement in suitable wayscarried bya slide 137. which, in turn, is guided for vertical movement on ways 138 formed on or secured to the upright 35. 139 denotes I a pin carried by the rack,136 and which engages the slotted end of an. arm 140 keyed or otherwise fixed to a sleeve 141 loosely or rotatably mounted. on a shaft 142 suitably journaled in fixed brackets 143 at the base of, the machine. 144 denotes a second arm fast upon the sleeve 141 and carryingv at its end a cam roller coiiperating with a cam' groove 145 inioncface of a double faced. path cam 146 on the cam shaft 44. 147 denotes an operating rod connected atits upperend to the slide 137 and ghid'ed for vertical movement in a suitable bracket 148 secured to the upright 35. The operating rod 147 carries at its lower end a cam roller coiiperating with a groove in a path cam" 149 on the cam shaft 44. Theaparts last described are so proportioned an arranged .that immediately after the dipping operation, when the tanks have been lowered sufficiently to clear the dipping frames and prior to the forward movement of the carrying head, the slide 137 is raised to car y the rack 136 into mesh with the pinion 135 on the shaft 49 then in lowermost position, and

' thereafter the sleeve 1.41 is rocked by the cam groove 145, thereby moving the rack 136 horizontally a sufficient distance to turn the shaft 49 through an angle of approximately 140. The slide 137 is-t-hen lowered to carry the rack 136 out of mesh with the pinion 135, and said rack 136-15 moved horizonally into its initial position, leaving the shaft 49 in the position into which it has been turned. 150 denotes a' guide bracket bolted or otherwise secured to'the upright 35 and extending into a position adjacent the pinion 135 of the shaft,49 which is in position 11 as indicated in Fig. 152 and 1.53 denote fixed pins carried by and project- 1,1eo,ess

ing from the bracket 150. 151 denotes a rack bar provided with slots 154 and 155 which receive the pins 152 and 153, respectively, whereby said rack bar is guided for longitudinal movement on the bracket 150.

The slot 154 is formed at its upper or outer end with an enlargement or cam portion 156. 157 denotes a link or connecting rod pivoted at one end to the lower or inner end of the rack 151 and at its opposite end to an arm 158 keyed or otherwise fixed to the shaft 142.v 159'denotes a second arm fast upon the shaft 142 and carrying at its end a cam roller which coiiperates with a cam groove 160 in the face of the cam 146 opposite to that provided with the groove 145.

he parts last described are so constructed and arranged 'that,,,whiie the carrying head is statlonary during the dipping operation,

the shaft 142 is rocked by the cam groove 160 to impart to the rack 151 one complete reciprocation, that is to say move the same longitudinally outwardly and then inwardly. 151 is shown in Fig.14, in which the pin 152 is in the enlargement 156 of-the slot 154, and the rack 151 out of meshwith the The normal position of the rack,

pinion 135 on the shaft 49 which is in position 11 of Fig. 34 As the rack151 is moved outwardly the first effect is to cause the pin 152,10 engagement with theinner edge of the enlargement or cam portion 156, to move said rack into mesh with the pinion 135 as shown inFig. 181 .The continued out, ward movement of the rack 151 causes the shaft 49 to berotated through an angle of approximately 180, thereby completelyv reversing the clipping frames carried thereby. As the rack 151 moves inwardly the shaft 49 is turned in the opposite direction and returned to its initial position, and: at'the completion of the inward movement of said rack theu'pin 152' enters the enlargement 156'and the rack 151drops out of mesh with the pinion 135. v

In order to prevent accidental rotation of the shafts 149 in the carryin head except 'when positively turned by the mechanisms hereinbefore described, and to hold said shafts with reference to saidhead in the angular positions in which they are so turned, the following tension or friction mechanism is provided, reference heinghad to Figs. 6 and 7. It will be understood that this mechanism is the same for each' sha ft 49 so that only one of thesetdevices is shown and described in detail. 161 denotes a disk or brake drum fast upon the shaft 49 bei tween the star wheel 113 and the adjacent arm 48. 162- denotes a.v friction or brake band secured at one end to'a stud 163 projecti ng, from the arm 48 and at its opposite end to a pin or rod ltiel which passes through a diametricalopeninp; in the stud 163 and which is threaded at its outer end .position I. as indicated in Fig. 3. have now masses to receive a. nut 165 between which and the stud 163 IS interposeda spring 166. By

adjusting the nut 165, and consequently the tive operating mechanisms The complete operation of the machine is as follows. Provision having been made for supplying the dipping tanks 99 with suitable solution or liquid composition. dipping forms of the desired character are applied to the dipping boards 96 and said dipping boards placed in position inthe dipping frames, each of said frames being preferably provided with four boards and each of said boards being preferably supplied with its full set of dipping forms, said dipping hoards being so placed in the dipping frames that the terms project outwardly from said frames. All of the dipping frames ha ring been thus supplied, and one pair of said frames being in the lowermost position, or in position I of Fig. 3, the cam .126, operating through therock shafts 122 and 114-, ca/uses the leveling mechanism.

to position said lowermost dipping frames so as to insure the horizontirl positioning of the dipping boards on their under sides. The cams 106 then raise. the clipping tanks 99. causing the dipping farms 3!) to be im' mersed iii the liquid therein to a. predetermined depth, atterwhich said tanks recede. Asthe dipping; tanizs 99 descend. the leveling niechai'iisin rel aises the corresponding star wheel ii and, when said tanks and leveling; mechanism have, receded to a sufl'iciciit extent to clear the dipping frames and star wheel respectively. the cam 14S) raises the rack l-l i into mesh with the corresponding pinion 135 and the cam 14-5 moves said rack to turn said 'iiiiioi through approximately 140, leaving said 'pinion in the position into which it has been turned. The arm 57. acting through the ratchet mechanism 52, 5th thereupon advances the cairvinn' hcad one ste n said head being properlv positioned alter this forward movemeal; by the planners i2 and iii as above explained. The dipping frames previously in bcen movcd into position ll; It will to the parts associatcd with a single shaft 49; As the dipping! forms are brought into position lI their movement ot translation or revolution about the axis oi the shaft 46,

combined with the axial rotation 'it'eviously imparted to the shaft il by the rack 136, causes said forms to be completely reversed or rotated through 180 thereby bringing the dipping forms which have just been iin- 'mersed to the top. This new positioning of the forms is assisted by the cn zagz'eincnt of" the corrcspinidiug star wheel ll i'with the; stud 131 which is atthis time depressed. During the next period of rest of the carrying head the stud 1331 is elevated into the position shown in Fig. It by the cam 126 and intermediate ineclianisnn therebyreleasing the star wheel 113. The ram 160, through the rock shaft 14-2 and intermediate connections, thereupon actuates the rack 1.51, which causes the dippingtorms in position TI to he again reversed and then returned. The cam 12b thereupon lowers-the'levcr132 and stud 13 1, and upon the ieXt-itorward movement or" the carrying heath transferring the dipping forms from positienlh to position TH, engagement of the star heel with the stud 131 causes the shaft .19- illfliiltt rotated a certain amount, and this rotation. conihined with the movement 01" translation or reyolu tion' of theiorms, causes them tobe 'z i gain reversed or turned through an angle 0? 1809.

as they are brought into position 111. There} after, as above explained, as the dipping forms are moved successively into positions Ii, V, VI, VII, VIII and IX, said forms are, at each step, reversed or turned through 3 an angle 01 1809 by engagement tat-the star wheel 113 with the studs 130,-said studs he ing suitably positioned to produce this issnlt. As theti'aines are moved from position I to position- I, however, theyare turned through an angle of only, thereby bring.-

course be understood that at each operation of the machine, that is to say after each forward movement of the carrying-head. a dip; ping operation takes place with respect to a of operations will .be explained With 'espect ing into dipping position dipping boards other than those containing the forms pre viously dipped. This operation is contm ued, each set of forms being dipped at every fourth complete. rotation of the carryin head and the speed of operation being suc as to permit each deposit of solution oncomposition to dry. or set to the desired extent between successive immersions ot thesame When a suliicient number of set of 'lorins. iminersions have taken place to produce a deposit of the desired thickness on the forms. the attendant may, at each forwardstep'of the carrying head, remove the lowermost di pping board of the dipping framein position IX and replace the same Withone containing fresh forms?- In this Waythe operation kit-the maciiine niity'be made continuous.

It will thus be seen that provision is made whereby each set of dippin forms maybe automatically. and repeated y immersed in the solution ee elcgg position 1n the dipping tanks, whereby after each immersion said forms are so turned or manipulated as to prevent the Wet solution from draining off or setting-unevenly, and whereby ample time 1s afforded between successive iminersions to permit the deposit on each form toset or dry properly, the last named result being accomplished Without interrupting the continuous operation of the machine. It will be understood that during a second rotation ofthe carrying head the dipping forms which are dipped on a first rotation are held in horizontal positions alternately at opposite sides of the dipping frames as the latter are reversed, the clipping forms last dipped being ineach case held in vertical position alternately at the upper and lower sides of said frames. Immediately after the dipping of a set of forms, and while the solution or composition thereon is still in a thin or i highly fluid condition, it is necessary that these forms be reversed more rapidly than is necessary later when the deposit has time to dry or set to a certain extent. This quickly repeated reversal of the forms is accomplished, when said forms are in positions I andll', by the racks l36 and 151, as above explained, the forms during the subsequent rotation of the carrying head being completely reversed once at each forward step.

It will also be seen that, although. a con-- siderable time is necessary to form a deposit of the desired thickness upon a single form, inasmuch as several immesions are usually 5 necessary and time must be allowed for the setting or drying of the several deposits between successive immersions, the possible capacity of the machine is so great that a large number of articles may be in course of pro- 40 duction at the same time, so that the time consumed per article is relatively small.

The machine herein shown, and chosen as anillustrative embodiment of the invention, is capable of carrying, at one time, from 35,000 to 40,000 dipping forms suitable for the production of nursing bottle nipples, and of completing said nipplesin from seven to ten hours. In other Words, the possible output of this machine is from .3,500 to 5,500 so'nipples per hour or more, this result being accomplished Without the expenditure of any very considerable amount of manual labor or skilled attention. I It will be furthermore seen that by reason of the mechanical provisions above 7 def scribed, all of the dipping forms are sub jected to the same operations with mechanical exactness, so that the articles formed'will all be of a uniform grade, that is to say of ..60 uniform size and thickness, and each of a substantially even thickness throughout, re-

sults Which it is practically impossible to.

secure by the method of hand dipping as usually practised.

Having thus described my invention 1 claim and desire to secure by Letters Pat- 8I1t17- '1. In a machine of the character described,

in combination, means for holding a set of dipping forms, a dipping tank provided.

with an overflow gutter ext ending about the ing means to cause said forms to be dipped to an equal depth in said tank.

3. In a machine of the character described, in combination, a-sliaft, means on sa d shaft for holding a set of dipping forms, a dipping tank, means for relatively moving said holding means and tank to immerse said forms in the liquid in said. tank, leveling means, and means on said shaft engaged by said leveling means for angularly positioning said shaft to level said holding means.

i, In a machine of the character described, in combination, a shaft, means on said shaft for holding a set of dipping forms, a dippin tank, means for relatively moving said hol in means and tank to immerse said,

forms in the liquid in said tank, a rock shaft, a pair of arms on said rock shaft, and means on said first-named shaft engaged by said arms to level said holding means.

5. In a machine of the character described, in combination, a shaft, means on said shaft for holding a set of dipping forms, a; dipping tank, means for relatively moving said holding means and tank to immerse said forms in the liquid in said tank, a rock shaft, 2. pair of arms on said rock shaft, adjustable contact members carried by said arms, and means on said first-named shaft engaged by said contact members. to level said holding means.

6. In a machine of'the characterdescribed,.

incombination, a shaft, means on said shaft for holding a set of dipping forms, a dipping tank, means for relatively movmg said holding means and tank to immerse sald forms in the liquid in said tank, a rock shaft, a pair of arms on said rock' shaft,

l v ad ustable stop screws carried by said arms and provided with heads, and means on said ping tank, means for relatively moving said holding means and tank to immerse said forms in the liquid In said tank, a rock shaft,'a pair of arms on said rock shaft,

means on said first-named shaft engaged by said arms to level said holding means, a third arm on said rock shaft, a link connected at one end to said last-named arm, a second rock-shaft provided with an arm con nected to the other end of said link, a second arm on said last-named rock shaft, and a cam cooperatingwith said last-nan1ed arm.

. 8. In a machine of the character described, in combination, a shaft, means on said shaft for holding a set of dipping forms, a dipping tank, means for relatively moving said holding means and tank to immerse said forms in the liquid in said tank, a star Wheel on said shaft, and means codperatlng w1th- 9. Ina machine of thecharacter described, in combination, a shaft, means on-said shaft for holding a set of dipping forms, a dipping tank, means for relatively moving said said star Wheel foil-leveling said holding a holding means to immerse said forms in the liquid in said tanlg-a. star wheel on said shaft, :1 rock shaft, a pair of arms on said rock shaft, adjustable stopscrews carried by said arms and provided with heads adapted to engage said star whel'tolevel said holding means, a third arm on said. rockshaft, a. link connected at one end to said last named arm, a second rock shaft provlded with an arm connected tothe other 1 I I v end to said link, a second arm on said last-- 1 named rock-shaft, and a cam cooperating with said last nan'ied arm.

10. In a machine of the character de scribed. in combination, means for holding,

a set of dipping forms, a dipping tank, and means for relatively moving said holding means and tank to immerse said "formsin the liquid in saidtank, said last-named means comprising a slide by which one of said parts is carried, a cam, a roller on said slide cooperating with said cam, and means for ad usting saidiroller on said shde.

11-. In a machine of the character described, in combination, meansfor holding a set of dipping forms, a. dipping tank, and means for relatively moving said holding means and tank to inimerse the liquid in said tank, said last--named means comprising a slide by which one of said partsis carried, a. cam, a. rollercooperating with said-cam, and an eccentric journaledv in said slide and by which said roller is carried.

12. In a machine of the character described, in combination, means for holding a set of dipping forms, a dipping tank ar-' ranged beneath said holding l1'102111,jt vertically movable slide by which said tank is carried, a cam, a roller cooperating with said cam, and an eccentric journaled on saidsli'de and. by which said roller is carried, said cam cooperating'with said} roller to raise said tank and immerse's'aid forms laid forms in ing applying means, a-palr of plungers each in the liduid therein to a depth determined by the adjustment of the said eccentric. 13. In a machine of the character described, in combination, means for holding operating with said cam, an eccentric journaled in said slide and by which said roller is carried, a slotted operating arm for sa d eccentric, a slotted arm :arried by said slide,

and a clamp for adjustably connecting said arms. i 1 1-4. In a machine or the character described, in combination, a carrying head having a plurality of arms, form holders carried by said arms respectively, forms carried bysaid holders, means for applying coating to said forms, means for intermittently moving said carrying head 'to present said form holders successively to saidcoat-. mg applying means, and means cocperating with said arms successively and engaging said arms at opposite sides for positioning said carrying head at each operation thereof.

15. 'In' a machine. of the character described, in combination,- a carrying head having aplualit-yof' alnns, form holders carried by saidarms'respectively, forms carried by said holder's,'

tently moving said carrying head to present Stud0111!llQlflGlS SHCCQSSIVGlY to said coating apply ng means, and a pair of plungers each provided with heads adapted to engage at oppositesides theseveral arms succes- 'sively' for positioning said carrying head at each operation thereof.

16. In a machine of'th'e character described, 1n combination, a carrying head.

having a plurality of'arms, form holders carried by said arms respectively, forms carried by said holders, means for applying -.cz'iating to said .form's, means for intermittently moving said carrying head to present said form holders successively to said coatineans for applying xCbtlillllg to said'to'rms, means-for Intermitprovided with heads adapted to engage at opposite sides the several arms-successively for positioning sai'd carrying'head at each operation thereof, the head of one of said plungers being beveled on its outer side to permit said 'arins to pass the same, and a spring for returning said plunger and head to operative position behind an arm which has passed said head.

17. In a machine of the character dcscribed, in combination, a carrying head, a

,head' to'presentsaid form holders sncces- In a machine of the character de- ,.-,,scribed, in combination, a carrying head 1j-having -a plurality of arms, form holders '1 carried by said'forms respectively, forms carried by said holders, means for apply-- ing coating .to said forms, means for intermittently movin said carrying head to pre- 5 sent said form holders successively to said coating applying means, a pair of plungers provided with heads adapted to engage at opposite sides the several arms successively for positioning said carrying head at each so operation thereof, the head of one of said plungers being beveled on its outer side to j permit said arms to pass the same, a spring for returnlng said last-named plunger and head to operative position behind-an arm which has passed said head, and means for withdrawing the other of said plungers fro n the path of movement of said arms to 1 permit said carrying head to move.

19. In a machine of the character described, in combination, a carrying head, a plurality of form holderscarried by said head, formscarried by said holders,means for applying coating to said forms, actuating means for intermittently moving said carrying head to present said form holders successively tosaid coating applying means, a plungercoiiperating with said carrying head for positioning the same at each opdds thereof, and means operated bysaid I actuating means for withdrawing saidplunr ger to permit said carrying head to move:

20'. In a machine 'of the character, de-

scribed, in combination, a carrying head havlng a plurality of arms, form holders carried by, said arms respectively, forms calried said holders, means for applying coating to said forms, means for intermittently moving said carrying head to present saidform holders successively to said coating applying'means, a plunger cooperating with' saidarmssuccessively for positioning "carrying, head at each operationthereo .a bell crank lever for withdrawing said plunger to permit said carrying head to 66 move, a lever operatively connected with said bell crank lever, a shaft, an arm on'said shaft, and astud on said arm for engaging and operating said last-named lever. 7 21.:In a machine of. the. character described, in combination, a carrying head having a plurality of arms, form holders carried by said arms respectively, forms car- 4 ried by said holders, means. for applying:

coating to said forms, means for intermit- 66 tently moving said carrying head to present I means for applying coating to" said forms, means for-intermittently rotating said carsaid form holders successively to saidoooating applying means, a pair 0 plungers each provided with beads adapted tofengage at opposite sides the several arms successively for positioning said, carrying head at each 70 operation thereof, sleeves in which said plungers are slidably mounted, said sleeves having slots, springs on said plungers within said sleeves for moving said plungers into operative position, and pins projecting from said plungers and guided in said slots.

22. In a machine of the character described, in combination, a carrying head operation thereof, sleeves in which said plungers are slid-ably mounted, said sleeves having slots, springs on said plungers within said sleeves for moving said plungers into operative position, pins projecting from said plungers and guided in saiid slots,'a bell crank lever engaging the pin on one of said 96 plungers for withdrawing said plunger from operative position, a lever operativelv con- I nected with said bellcrank lever, a shaft,

- an arm on said'shaft, and a stud on said arm for engaging and operatingsaid last-named 1 00 ever. i

23. Ina machine of the character described, the combination with a carrying head comprising a shaft, disks fast on said shaft,,and radiating arms secured to said disks, of a plurality of form holders carried by said arms, forms carried by saidfl holders, means for applying coating to said forms, and means for intermittently rotating said carrying head to present said form holders successively to said coating applying means. 7

24'.- In a machine of the character described, the combination with a carrying head comprising ashaft, disks fast on saidshaft and radiating arms secured tosaid disks, of form holders carriedby said arms 4 respectively, forms carried by said holders,

rying head to present said form holders successively to said coating applying means,

' and means cooperatingjwith said arms suc-.

cessively, and engaging'said arms at opposite sides, for positioning said carrying head at each operation. thereof. v

.25. In a. machine of, the character described, in combination, a rotating carrying head, a plurality of form holders carried by said head,:. forms carried 'by said holders, 130

messes means forapplying coating to said forms, a ratchet disk carried by said carrying head, a pawl coiiperating with said ratchet disk, and-means for periodically operating said pawl to rotate said carrying head and present said form holders successively to said coating applying means.

lating" pawl carrier, 21 pawl'on said carrier cooperating withsaid"ratchet 'dislt, a shaft, an arm on 531d shaft, a lever peripdically engaged by sa1darm, and a link connecting said lever and pawl carrier.

27. In a machine of the character described, in combi ation, a rotating carrying head having a plurality of radial arms, form holders carried by said arms respectively, forms carried by said holders, means for ap plying, coating to said forms, means-for intermittentlyrotating said carrying head to present saidfo1'1n-liolders successively to said coating applying means, said rotating means comprising a ratchet disk secured to said head, an oscillating pawlcarrier, a' pawl on said carriercoiiperating with said ratchet disk, ash-aft, an arm on said shaft, a stud. carried by said arm, a-roller journaled oral said stud, and a lever engaged and operated by said roller and operatively connected with said pawl carrier, a plunger cooperating; with the arms of said carrying lreiidsuccessively for positioning said head aheachoperatwn thereof, a bell crank lever forwithdrawing said plunger, and a. lever ,operatively-connected with. said bell crank 45 1 ever 'andengaged and operated by said stud. 2-8. In a machine of-the character de scribed, in combination, a rotating carrying imparted thereto by said rotating means.

2. ).'Ina machine of the character des i'ibed,-'in combination, a rotating carrying l ead, a plurality of form holders carried by said head, forms carried by said. holders, means for applying: coating to said forms, means for intermittently rotating; said carrying head to present said form holders successively to said coatingapplying-means,

' means to prevent said carrying head" from rotating at a greater speedthan that im parted thereto by said rotating means, and

means for positioning said'head at each operation thereof.

30. In a machine of the character described, in combination, a rotating}, carrying head, a pll'lrality of form holders carried by said head, forms carried by said holders,

means for applying coating to said forms, means for intermittently rotating said carrying head to present said form holders successively to said coating applying means, a ratchet wheel carried by said head, a pawl carrier rotatably mounted on said ratchet wheel, and means for rotating, said pawl carrier.

31. In a machine or the character described, in combination. a .rotatin carr in 7 b 23 ratchet disk carried by said carrying head, a

pawl coiiperating with said ratchet disk,

means for periodically operating said pa'wl to rotate said carrying head and present said form holders successively to said coat, ing applying means, a ratchet wheel secured to said ratchet disk, a pawl carrier rotatamy mounted on said ratchet wheel, and means for rotating said pawl carrier.

32. Ina machineof the character described, in combination, a rotating carry-r ing head, a plurality of form holders carriedby said head, forms carried by said holders neans for applying coating-to said forms, a shaft, means operated by said shaft for intermittently rotating said carrying head to present siid formholders successively to said coating applying means, a ratchet wheel carried by said head, a pawl carrierrotatably mounted on said ratchet wheel, and means operated by said shaft for rotating said pawl carrier.

33. In a machine of the character descrihedoin combination, a rotating carrying head, a plurality of form holders, carried by said head, forms carried by said holders, means for applying coating to said forms.

a shaft, mmns operated by said shaft for a second sprocket wheel secured to said shaft, and a chain connecting; said sprocket wheels. i

In a machine of the character described, in combinatimi, a rotating-carrying head. a phu'ality of tortn. holders carried by said head, forms carried by said holders,

means for applying coating to said forms,

a ratchet disk secured to said carrying head, an oscillating pawl arm, a pawlon'said arm loo cooperating with said ratchet disk, a shaft, an arm on said shaft, a lever periodically engaged by said last-named arm and operatively connected with said pawl arm, a ratchet wheel secured to said ratchet, disk, a pawl carrier rotatably mounted on said ratchet wheel, a sprocket wheel secured to said pawl carrier, a second sprocket wheel secured to said shaft, and a chain. connecting said sprocket wheels.

35. In a. machine'of the character described, in combination, a rotating carrying head, a plurality of form holders carried by said head, forms carried by said holders, means for applying coating to said forms, means for intermittently rotating said carrying head to present said form holders successively to said coating applying means, a ratchet wheel carried by said head, a pawl carrier rotatablymounted on said ratchet wheel, pawls on said carrier, the spacing of said pawls on said carrierlbeing disproportionate to the spacing of the teeth on said ratchet wheel, and means for rotating said pawl carrier.

36. In a machine of the character de-- scribed, in combination, a board, provided with spring arms for engaging and removably holding a set of forms, means for apframe provided with means forremovably holding said board.

37. In a machine of the character described, in combination, a board'provi'ded with means for removably holding a set of forms,'a shaft, a carrying frame secured t6 said shaft and provided with means for removably holding said board, a dipping tank, means for )relatively moving said carrying frame and tank to immerse said forms in the liquid in said tank, leveling means,and means on said shaft engaged by said leveling means for angularly posi' tioning said Shaft to level said board.

38. In a machine of the character described, in combination, a rotating carrying head, a plurality of sets of forms, a plurality of boards provided ivith means for removably holding said set of forms, a plurality of shafts ,journaled in said head, carrying frames secured to said shafts and provided with means for removably holding said boards, means for applying coating to said forms, and means for intermittently rotating said carrying head to present saidcarrying frames successively to said coating applying means.

, 39. In a machine of the character de-.

scribed, in combination, a carrying frame comprising a pair of end heads provided with grooves on their inner or adjacent faces, a board removably mounted in said grooves and provided with means for removably holding a set of forms, and means for applyingcoating to said forms.

plying coating to said forms, and a carrying 40. lb a machine of the character described, in combination, a shaft, a carrying frame comprising a pair of end heads se-,

cured to said shaft and provided .with grooves on their inner'or adjacent faces, a member removably mounted in said grooves and provided with means for removably holding a set of forms, and means for applying coating to said forms.

41. In a machine of the character described, in combination, a carrying frame comprising a pair of square end'heads provide with grooves on their inner faces ad ,v acent their edges, members removablymounted in said grooves and providedfwith means for removably holding sets of forms,,,. .u,.' and means for applying coating to said forms.

l2. In a scribed, in combination, a carrying frame,

machine of the character decomprising a pair of end heads provided With grooves on their inner or adjacent said head to present said carrying frames successively to said coating applying means,

and means for moving each of said carrying frames to present the form holderstherein to said coating applying means successively.

44. In .a machine of the character described, in combination, a carrying head, a plurality of form holders carried by said head, forms carried by said holders, means for applying a liquid coating to said form means for intermittently moving saidcarrying head to present said form holders successively to said coating applying means, and means for operating said form holders tochange the position of said forms after .the application of said coating and prior to the movement of said head to prevent said coating from draining'from said forms and cause the same to set evenly thereon;

45. In a machine'of the character described, in combination, a shaft,--a. form holder mounted on said shaft, forms carried by said holder, means, for applying liquid coating to said forms, a pinion on said shaft,.

and a rack cooperating with said pinion to turn said form holder and change the position of said forms after the application off said coating. x

46. In a machine of the character scribed, n combination, a shaft,t a

holder mounted on said shaft, forms carried by said holder, means for applying liquid c ating to said. forms, a pinion on said shaft, a rack coiiperati'ng \vitlrsaid pinion, and means for moving said rack into and out of mesh withsaid pinion.

47. lnfa machine of. the character described, in combination, a shaft, a form holder mounted on'said shaft, forms carried by said holder, means for applying liquid coating to said forms, a pinion on said shaft,

a rack cooperating with said pinion, a slide provided with ways on which said rack is guided, means for reciprocating said rack on said ways to rotate said pinion, ways arrangedtransverse to said first named ways and upon which said slide is guided, and

means for movingsaid' slide on said last named ways to move said rack into and out of mesh with said pinion.

48. In a machine of the character described, in 3 combination, a shaft, a form holder mounted on said shaft, formscarried by said holder, means for applying liquid coating to said forms, a pinion on said shaft,

a rack cooperating with said pinion, a slide providedwith ways-on which said rack is guided, a rock shaft, an arm on said rock shaft operatively connected with said rack,

a second arm on said ,rock shaft, a cam cooperating with said last named arm, ways arranged transverse to said first named- Ways and upon which said slide is guided,

an operating rod for said slide, and a cam cooperating with said rod.

49. In a machine'of the character de scribed, in combination, a shaft, a form hol'der mounted on said shaft, forms carried by said holder,-means for applying liquid coating to said forms, a pinion on said shaft; a bracket provided w th projecting pins, a

rack coiiperating with said pinion and provided with slots which receive said pins whereby said rack is guided on said bracket, and means for reciprocating said rack.

50. In a machine of the character de scribed, in combination,-a shaft, a form holder mounted on said shaft, forms carried by said holder, means for applyingliquid coating to said forms, a pinion on said shaft, a bracket provided with projecting pins, a rack cooperating with said pinion and provided with slots which receive said pins whereby said rack is guided on said bracket, one of said slots having a'cam portion for moving said rack into and out of engagement with said pinion, and means for reciprocating said rack.

51. In a machine .of the character described, in combination, a shaft, a form holder mounted on "said shaft, forms carried by said holder, means for applying liquid coating to said forms, a pinion on said shaft, a bracket provided with projecting pins, a rack cooperating with said pmsleeve, and a cam for operating ion and provided with slots which receive said pins whereby said rack is guided on said bracket, a cam, a rock shaft, an arm on said rock shaft cooperating with said earn, an a second arm onsaid rock'shaft' connected with said rack.

52. In a machine'of the character described, in combination, a car tying head, a

plurality of shafts journaledin said head, form holders mounted on said shafts, forms carried by said holders, means for applying liquid coating to said forms, means for intermittently moving said carrying head to bring said form holders successively into operative relationship to said coating applying means, pinions on said shafts, and a plurality of racks adapted respectively to engage and turn said pinions in different positions of said carrying head.

In a machine of the character described, in combination, a carrying head, a

plurality of shafts journaled insaid head,

" one of said racks, a second arm on said rock shaft, a cam for operating said lastnamed, arm, a sleeve on said rock shaft, an arm on said sleeve operatively connected with the Othelfif said racks, a second arm on said said last named arm.

54. In a machine of the character described, in combination, a carrying head, a

plurality of shafts jonrnaled 111 said head,

form holders mounted onsai d shafts, forms carried by saidholders, meansfor applying liquid coating to said forms, means f intermittently moving said carrying head to bring said form holders successively into operative relationship to said coating applying means, pinions on said shafts, a pair of racks adapted respectively to engage and turnsaid pinions in different positions ofsaid carrying head, a bracket provided with projecting pins, one of said racks being, provided with slots which receive said pins whereby said rackis guided on saidbracket, a slide provided with ways on which the other of said racks'is guided, a rock shaft,

an arm on said rock shaftgoperatively con nected with "saidfirst named rack,a second arm on said rock shaft, a cam for operatingsaid last namedf arm, a sleeve onsaid rock shaft, an arm on'said sleeve operativelyconnected with the other of said racks, a second arm on said sleeve, a cam for operating 

